0001213900-23-011274.txt : 20230214 0001213900-23-011274.hdr.sgml : 20230214 20230214114454 ACCESSION NUMBER: 0001213900-23-011274 CONFORMED SUBMISSION TYPE: 13F-HR PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20221231 FILED AS OF DATE: 20230214 DATE AS OF CHANGE: 20230214 EFFECTIVENESS DATE: 20230214 FILER: COMPANY DATA: COMPANY CONFORMED NAME: OBERWEIS ASSET MANAGEMENT INC/ CENTRAL INDEX KEY: 0000937886 IRS NUMBER: 364106772 STATE OF INCORPORATION: IL FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR SEC ACT: 1934 Act SEC FILE NUMBER: 028-04688 FILM NUMBER: 23624968 BUSINESS ADDRESS: STREET 1: 3333 WARRENVILLE ROAD STREET 2: SUITE 500 CITY: LISLE STATE: IL ZIP: 60532 BUSINESS PHONE: 6305772300 MAIL ADDRESS: STREET 1: 3333 WARRENVILLE ROAD STREET 2: SUITE 500 CITY: LISLE STATE: IL ZIP: 60532 13F-HR 1 primary_doc.xml X0202 13F-HR LIVE false false false 0000937886 XXXXXXXX 12-31-2022 12-31-2022 false OBERWEIS ASSET MANAGEMENT INC/

3333 Warrenville Road Suite 500 Lisle IL 60532

13F HOLDINGS REPORT 028-04688 000105471 801-35657 N Thomas P. Joyce 800-323-6166 /s/ Thomas P. Joyce Lisle IL 02-14-2023 0 168 470439140 INFORMATION TABLE 2 infotable.xml A10 Networks, Inc. com 002121101 2181856 131200 SH SOLE 131200 0 0 ABM Industries, Inc. com 000957100 1976690 44500 SH SOLE 44500 0 0 ADMA Biologics, Inc. com 000899104 2083172 536900 SH SOLE 536900 0 0 AFYA Ltd. com G01125106 265540 17000 SH SOLE 17000 0 0 AMN Healthcare Svcs com 001744101 1562864 15200 SH SOLE 15200 0 0 AMR Corp Escrow com 001ESC102 0 18000 SH SOLE 18000 0 0 ATI, Inc. com 01741R102 1707992 57200 SH SOLE 57200 0 0 Acadia Healthcare Co., Inc. com 00404A109 4838770 58780 SH SOLE 40080 0 18700 Adtran, Inc. com 00486H105 2187156 116400 SH SOLE 116400 0 0 Aehr Test Systems com 00760J108 12212921 607608 SH SOLE 607608 0 0 Allegro MicroSystems, Inc. com 01749D105 3458304 115200 SH SOLE 115200 0 0 Allied Motion Technologies com 019330109 1615184 46400 SH SOLE 46400 0 0 Alphatec Hldgs Inc. com 02081G201 6215632 503290 SH SOLE 496460 0 6830 Alta Equipment Group, Inc. com 02128L106 1234584 93600 SH SOLE 93600 0 0 Ameresco, Inc. com 02361E108 4925925 86208 SH SOLE 86208 0 0 American Power Corp com 02906T107 0 10000 SH SOLE 0 0 10000 Amgen, Inc. com 031162100 362660 1381 SH SOLE 0 0 1381 Amphastar Pharmaceuticals, Inc com 03209R103 3754680 134000 SH SOLE 134000 0 0 Amtech Systems, Inc. com 032332504 865640 113900 SH SOLE 113900 0 0 Apple, Inc. com 037833100 711835 5479 SH SOLE 240 0 5239 Applied Industrial com 03820c105 2092098 16600 SH SOLE 16600 0 0 Avatar Ventures com 05350B100 0 10000 SH SOLE 0 0 10000 Aviat Networks, Inc. com 05366Y201 2598345 83307 SH SOLE 83307 0 0 Avid Technology, Inc. com 05367P100 1387998 52200 SH SOLE 52200 0 0 Axcelis Technologies com 054540208 22185009 279549 SH SOLE 238089 0 41460 Bel Fuse, Inc. com 077347300 3779216 114800 SH SOLE 114800 0 0 Belden, Inc. com 077454106 6598187 91769 SH SOLE 72025 0 19744 Boot Barn Hldgs, Inc. com 099406100 1744308 27900 SH SOLE 27900 0 0 Brookline Bancorp, Inc. com 11373M107 1722055 121700 SH SOLE 121700 0 0 CECO Environmental Corp. com 125141101 2126928 182100 SH SOLE 182100 0 0 Cabot Corp. com 127055101 2990906 44747 SH SOLE 35036 0 9712 Cadence Design System, Inc. com 127387108 4096320 25500 SH SOLE 25500 0 0 Caleres Inc. com 129500104 837728 37600 SH SOLE 37600 0 0 Calix, Inc. com 13100M509 2593497 37900 SH SOLE 37900 0 0 Camtek, Ltd. com M20791105 1299593 59180 SH SOLE 59180 0 0 Catalyst Pharmaceuticals, Inc. com 14888U101 1796760 96600 SH SOLE 96600 0 0 Cerus Corp. com 157085101 1036235 283900 SH SOLE 283900 0 0 Ciena Corporation com 171779309 4098027 80385 SH SOLE 62300 0 18085 Clean Harbors, Inc. com 184496107 5515990 48335 SH SOLE 41130 0 7205 Clearfield, Inc. com 18482P103 8899996 94540 SH SOLE 86780 0 7760 Clearwater Paper Corp com 18538R103 1580458 41800 SH SOLE 41800 0 0 Comstock Res com 205768302 1957788 142800 SH SOLE 142800 0 0 Constellium NV Cl A com F21107101 58432061 4939312 SH SOLE 3348254 0 1591058 Controladora Vuela Comp de Avi com 21240E105 117040 14000 SH SOLE 14000 0 0 Crocs, Inc. com 227046109 11282142 104050 SH SOLE 82200 0 21850 Cross Country Healthcare, Inc. com 227483104 2064489 77700 SH SOLE 77700 0 0 Dada Nexus Limited com 23344D108 3189974 457672 SH SOLE 456272 0 1400 Deckers Outdoor Corp. com 243537107 10825219 27120 SH SOLE 20700 0 6420 Despegar Com Corp. com G27358103 59508 11600 SH SOLE 11600 0 0 Destination XL Group, Inc. com 25065K104 2282175 338100 SH SOLE 338100 0 0 Dynavax Technologies Corp. com 268158201 1954568 183700 SH SOLE 183700 0 0 EZCorp, Inc. com 302301106 2135300 262000 SH SOLE 262000 0 0 Earthstone Energy Inc. com 27032D304 1832824 128800 SH SOLE 128800 0 0 Eli Lilly & Company com 532457108 233649 639 SH SOLE 0 0 639 Employers Holdings, Inc. com 292218104 1660505 38500 SH SOLE 38500 0 0 EnPro Industries, Inc. com 29355x107 2097717 19300 SH SOLE 19300 0 0 Everi Hldgs, Inc. com 30034T103 3225880 224800 SH SOLE 224800 0 0 Evolent Health, Inc. com 30050B101 3912667 139340 SH SOLE 118690 0 20650 Extreme Networks, Inc. com 30226D106 2748331 150100 SH SOLE 150100 0 0 Fabrinet com G3323L100 3656193 28515 SH SOLE 28430 0 85 Federal Signal Corp. com 313855108 2653437 57100 SH SOLE 57100 0 0 First Merchants Corporation com 320817109 1040083 25300 SH SOLE 25300 0 0 FirstCash Holdings, Inc com 33768G107 1555689 17900 SH SOLE 17900 0 0 Forward Air Corp. com 349853101 1027922 9800 SH SOLE 9800 0 0 Fox Factory Hldg Corp. com 35138V102 1924953 21100 SH SOLE 21100 0 0 Franklin Covey Co. com 353469109 2165451 46300 SH SOLE 46300 0 0 Franklin Electric com 353514102 2121350 26600 SH SOLE 26600 0 0 Full House Resorts, Inc. com 359678109 1667507 221743 SH SOLE 221743 0 0 Futu Holdings Ltd. com 36118L106 813000 20000 SH SOLE 20000 0 0 Guess, Inc com 401617105 1822375 88080 SH SOLE 86800 0 1280 H&E Equipment Services, Inc. com 404030108 2274540 50100 SH SOLE 50100 0 0 Haemonetics Corp. com 405024100 1549405 19700 SH SOLE 19700 0 0 Halozyme Therapeutics, Inc. com 40637H109 8158891 143390 SH SOLE 118550 0 24840 Harmonic, 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150020 0 14920 LeMaitre Vascular, Inc. com 525558201 994032 21600 SH SOLE 21600 0 0 Liberty Energy, Inc. com 53115L104 1346441 84100 SH SOLE 84100 0 0 M/I Homes, Inc. com 55305B101 1385400 30000 SH SOLE 30000 0 0 MGP Ingredients, Inc. com 55303J106 3563823 33501 SH SOLE 25600 0 7900 MINISO Group Holding Limited com 66981J102 965700 90000 SH SOLE 90000 0 0 MP Materials Corp. com 553368101 1165440 48000 SH SOLE 48000 0 0 MRC Global, Inc. com 55345K103 1388442 119900 SH SOLE 119900 0 0 Macom Technology Solutions com 55405Y100 2418432 38400 SH SOLE 38400 0 0 Magnolia Oil & Gas Corp. com 559663109 1573495 67100 SH SOLE 67100 0 0 Mastercard, Inc. com 57636Q104 335502 965 SH SOLE 0 0 965 Matador Resources Company com 576485205 1734372 30300 SH SOLE 30300 0 0 Maxlinear, Inc. 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